LICHALP

Arthonia punctiformis Ach.

Syn.: Arthonia armoricana Nyl. f. saltelii B. de Lesd., Arthonia atomaria A. Massal., Arthonia celtidis A. Massal., Arthonia griseoalba Anzi, Arthonia insinuata Stirt., Arthonia melantera Ach., Arthonia populina A. Massal., Arthonia punctiformis Ach. var. glaucescens Ach., Arthonia punctiformis Ach. var. olivacea Ach., Arthonia quadriseptata (Ohlert) Lettau, Arthonia quercuus Hepp, Arthonia stenospora Müll. Arg., Naevia atomaria (A. Massal.) A. Massal., Naevia celtidis (A. Massal.) A. Massal., Naevia populina (A. Massal.) A. Massal., Opegrapha microscopica Sm.

Non- or doubtfully lichenised.

Substrate: bark

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: a temperate to boreal-montane, circumpolar. doubtfully lichenised early coloniser of smooth bark, especially of twigs, rare in dry areas; widespread throughout the Alps.